{
  "bibcode": "2006GCN..5709....1B",
  "body": "D. Bersier , C.G. Mundell (Liverpool JMU), C. Guidorzi (Univ Bicocca &\nINAF-OAB), A. Gomboc (U. Ljubljana), A. Melandri, C.J. Mottram,\nI.A. Steele, R.J. Smith, A. Monfardini, D. Carter, S. Kobayashi,\n(Liverpool JMU), E. Rol, P. O'Brien, N. Bannister (Leicester) report:\n\nWe observed the optical counterpart of GRB 061007 (GCN 5706, 5707, 5708)\nwith the 2m Faulkes Telescope South (Siding Spring).  At 142 sec after\ntrigger time, we measure a magnitude of mR=10.15 +/- 0.04 (calibration based\non USNOB1 R2 mag, which may introduce a 0.3 mag systematic uncertainty).\nWhen compared to the magnitude measured by ROTSE (m=13.6, GCN 5706),\nthis implies a subtantial brightening in the first 2.5 minutes (more\nthan a factor of 10 between 26 and 142 seconds).\n\nFrom 142s on, the OT is seen to decay. For the next three hours,\nthe decay followed a power law with an index of about -1.55 +/- 0.05.\n\nThe position of the afterglow is 03:05:19.56, -50:30:2.7 +/- 1.2\"\n\nObservations and analysis are continuing.",
  "circularId": 5709,
  "createdOn": 1160232318000,
  "email": "dfb@astro.livjm.ac.uk",
  "subject": "GRB 061007 - FTS early brightening and power law decay",
  "submitter": "David Bersier at Liverpool John Moores U  <dfb@astro.livjm.ac.uk>",
  "eventId": "GRB 061007"
}